424 HALBERT L. DUNN 
The absolute volume of the right and of the left hemispheres 
(figs. 4 and 5) shows no marked differences—the minor distinctions 
between the two falling within the margin of experimental error. 
aaa eemee 
O 5 10 15 20 25 30 35 AO A5 50 55cm 
Fig.4 Field graph and curve of the growth in weight and volume of the right 
cerebral hemisphere in fetal life. Abscissa: total body lengthinem. Ordinate: 
right hemisphere weight and volume in grams (cc.). Individual cases are in- 
dicated by solid dots (for weight) and by circles (for volume). Curve drawn 
to the formula: Y = (0.1X)*18, (Data from tables 7 and 8.) 
The absolute volume curve of the hemispheres shows the same 
concave form as the volume of the central nervous ststem (fig. 2). 
At 15 em. (C H) the hemispheres are 1.8 ce. in volume, while in 
